Hello @Majoli237 Welcome to King Community. You can create an account and start playing game and it will be saved your game progress always. If you change your devices then also you can have your game progress using by same account login details. Thanks
Hello @Majoli237 . To save your game go into Settings, which is the small pink cogwheel at the top right of the map. Then press "my account" here on this screen:
and you can choose how to save your game on this screen: